| 1 | /* |
| 2 | * |
| 3 | * arch/xtensa/platform-iss/setup.c |
| 4 | * |
| 5 | * Platform specific initialization. |
| 6 | * |
| 7 | * Authors: Chris Zankel <chris@zankel.net> |
| 8 | * Joe Taylor <joe@tensilica.com> |
| 9 | * |
| 10 | * Copyright 2001 - 2005 Tensilica Inc. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify it |
| 13 | * under the terms of the GNU General Public License as published by the |
| 14 | * Free Software Foundation; either version 2 of the License, or (at your |
| 15 | * option) any later version. |
| 16 | * |
| 17 | */ |
| 18 | #include <linux/config.h> |
| 19 | #include <linux/stddef.h> |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/init.h> |
| 22 | #include <linux/errno.h> |
| 23 | #include <linux/reboot.h> |
| 24 | #include <linux/pci.h> |
| 25 | #include <linux/kdev_t.h> |
| 26 | #include <linux/types.h> |
| 27 | #include <linux/major.h> |
| 28 | #include <linux/blkdev.h> |
| 29 | #include <linux/console.h> |
| 30 | #include <linux/delay.h> |
| 31 | #include <linux/stringify.h> |
| 32 | #include <linux/notifier.h> |
| 33 | |
| 34 | #include <asm/platform.h> |
| 35 | #include <asm/bootparam.h> |
| 36 | |
| 37 | |
| 38 | void __init platform_init(bp_tag_t* bootparam) |
| 39 | { |
| 40 | |
| 41 | } |
| 42 | |
| 43 | void platform_halt(void) |
| 44 | { |
| 45 | printk (" ** Called platform_halt(), looping forever! **\n"); |
| 46 | while (1); |
| 47 | } |
| 48 | |
| 49 | void platform_power_off(void) |
| 50 | { |
| 51 | printk (" ** Called platform_power_off(), looping forever! **\n"); |
| 52 | while (1); |
| 53 | } |
| 54 | void platform_restart(void) |
| 55 | { |
| 56 | /* Flush and reset the mmu, simulate a processor reset, and |
| 57 | * jump to the reset vector. */ |
| 58 | |
| 59 | __asm__ __volatile__("movi a2, 15\n\t" |
| 60 | "wsr a2, " __stringify(ICOUNTLEVEL) "\n\t" |
| 61 | "movi a2, 0\n\t" |
| 62 | "wsr a2, " __stringify(ICOUNT) "\n\t" |
| 63 | "wsr a2, " __stringify(IBREAKENABLE) "\n\t" |
| 64 | "wsr a2, " __stringify(LCOUNT) "\n\t" |
| 65 | "movi a2, 0x1f\n\t" |
| 66 | "wsr a2, " __stringify(PS) "\n\t" |
| 67 | "isync\n\t" |
| 68 | "jx %0\n\t" |
| 69 | : |
| 70 | : "a" (XCHAL_RESET_VECTOR_VADDR) |
| 71 | : "a2"); |
| 72 | |
| 73 | /* control never gets here */ |
| 74 | } |
| 75 | |
| 76 | extern void iss_net_poll(void); |
| 77 | |
| 78 | const char twirl[]="|/-\\|/-\\"; |
| 79 | |
| 80 | void platform_heartbeat(void) |
| 81 | { |
| 82 | #if 0 |
| 83 | static int i = 0, j = 0; |
| 84 | |
| 85 | if (--i < 0) { |
| 86 | i = 99; |
| 87 | printk("\r%c\r", twirl[j++]); |
| 88 | if (j == 8) |
| 89 | j = 0; |
| 90 | } |
| 91 | #endif |
| 92 | } |
| 93 | |
| 94 | |
| 95 | |
| 96 | static int |
| 97 | iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr) |
| 98 | { |
| 99 | __asm__ __volatile__("movi a2, -1; simcall\n"); |
| 100 | return NOTIFY_DONE; |
| 101 | } |
| 102 | |
| 103 | static struct notifier_block iss_panic_block = { |
| 104 | iss_panic_event, |
| 105 | NULL, |
| 106 | 0 |
| 107 | }; |
| 108 | |
| 109 | void __init platform_setup(char **p_cmdline) |
| 110 | { |
| 111 | atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block); |
| 112 | } |